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Impediment RS-1600-X24 User Manual

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RS-1600-X24 User Guide
Part No. 43061-01A
Issue 1-0
June 23, 2003

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Summary of Contents for Impediment RS-1600-X24

  • Page 1 RS-1600-X24 User Guide Part No. 43061-01A Issue 1-0 June 23, 2003...
  • Page 2 RS-1600-X24 User Guide Notices The information in this document is subject to change without notice. While every effort has been made to ensure that all information in this document is accurate, the Authors accept no liability for any errors that may arise.

  • Page 3: Table Of Contents

    Special Tools and Equipment ......................xiv Related Documentation ........................xiv Conventions ............................xv Revision History ........................... xvi 1 Introduction ............................. 1 1.1 The RS-1600-X24 System ......................1 1.2 The Enclosure Core Product ....................... 2 1.2.1 Enclosure Chassis ......................2 1.2.2 Tower Option ........................
  • Page 4 RS-1600-X24 User Guide 1.6.6 Environment ........................12 1.6.7 Interfaces ......................... 13 1.6.8 Drive Carrier Module Specification .................. 13 1.6.9 X24 FC-AL LRC I/O Module Specification ............... 14 1.6.10 RAID Card ........................14 1.6.11 Software Enclosure Services (SES) Support ..............14 2 Operation ............................
  • Page 5 Contents 5.2 Changing the Date and Time ....................43 5.3 Understanding LUNs and Viewing LUN Information ..............43 5.3.1 Viewing LUN Information ....................44 5.4 Changing Management LUNs ....................44 5.5 Changing the Alarm Mute Setting ..................... 44 5.6 Controlling Host Access to the X24’s Write-back Cache Setting ..........45 5.7 Enabling and Disabling the Battery ...................
  • Page 6 RS-1600-X24 User Guide 7.9 Host Fibre Channel Problems ....................67 7.10 Array Problems ......................... 68 7.10.1 Changing the Backoff Percent Using SAM ..............68 7.10.2 Changing the Backoff Percent Using the Disk Array Administrator ......... 68 7.11 X24 Subsystem Problems ......................69 7.12 Replacing a Module ........................
  • Page 7 Contents B.3.1 Changing the Screen Display ..................102 B.3.2 Disk Array Administrator Menu Tree ................103 C Creating and Managing Arrays & Partitions ................105 C.1 Creating Arrays ........................105 C.1.1 Creating a Single-Partition Array ..................106 C.1.2 Creating a Multiple-Partition Array ................. 111 C.2 Managing Arrays ........................
  • Page 8 RS-1600-X24 User Guide E.3.3 Displaying the Spare Pool ....................171 F Managing Disk Drives and Enclosures ..................173 F.1 Managing Disk Drives ......................173 F.1.1 Displaying Drive Information ..................173 F.1.2 Clearing Metadata from a Drive ..................177 F.1.3 Enabling and Disabling Write-back Cache ..............177 F.1.4...
  • Page 9 Contents Index ..............................229...
  • Page 10 RS-1600-X24 User Guide...

  • Page 11: Preface

    This user guide assumes that you have a working knowledge of the Fibre Channel environment into which you are installing the RS-1600-X24 system. If you do not have these skills, or are not confident with the instructions in this guide, do not proceed with the installation.

  • Page 12: European Regulations

    Permanently unplug the unit if you think that it has become damaged in any way and before you move it. • An RS-1600-X24 enclosure can weigh up to 37kg (81lb). Do not try to lift it by yourself. Chassis Warning Label: Weight Hazard •...
  • Page 13 PSU/Cooling Module Caution Label: Do not operate with modules missing • The RS-1600-X24 unit must only be operated from a power supply input voltage range of 100 - 120VAC or 200-240 VAC. • The plug on the power supply cord is used as the main disconnect device. Ensure that the socket outlets are located near the equipment and are easily accessible.

  • Page 14: Battery Safety

    RS-1600-X24 User Guide • Provide a suitable power source with electrical overload protection to meet the requirements laid down in the technical specification. • A faulty power supply/cooling module must be replaced with a fully operational module within 24 hours.

  • Page 15: Rack System Precautions

    ESD Precautions Caution It is recommended that you fit and check a suitable anti-static wrist or ankle strap and observe all conventional ESD precautions when handling RS-1600-X24 plug-in modules and components. Avoid contact with backplane components and module connectors, etc. xiii...

  • Page 16: Data Security

    There are no special tools required but in order to complete the assembly of some configurations you may need the following (not supplied): • Security keys (one of these should be included with your RS-1600-X24 enclosure for use with the drive locks).

  • Page 17: Conventions

    Preface Conventions This Getting Started guide uses several conventions to help explain how to use the X24. Convention Definition Bold Words in bold indicate items to select such as menu items or command buttons. CTRL-R Keys you press simultaneously. In this example, hold down the Ctrl key and press the r key.

  • Page 18: Revision History

    RS-1600-X24 User Guide Revision History Version Date Description of Change Issue 1.0 June, 2003 Initial (Beta) Release...

  • Page 19: Introduction

    Introduction Chapter 1 Introduction 1.1 The RS-1600-X24 System Figure 1–1 The RS-1600-X24 (FC-AL) System...

  • Page 20: The Enclosure Core Product

    RS-1600-X24 User Guide 1.2 The Enclosure Core Product The RS-1600-X24 design concept is based on a Subsystem together with a set of plug-in modules. The RS-1600-X24 Subsystem as supplied comprises: • Chassis and Backplane with integral Operators Panel. • Power Supply/Cooling plug-in modules, auto-ranging, 475W, AC (see Figure 1–5)

  • Page 21: Tower Option

    Introduction Figure 1–3 X24 Enclosure Chassis (Rear) 1.2.2 Tower Option An optional tower kit is available, which can be fitted to the rack chassis described here. Figure 1–4 RS-1600-X24 Tower Option...

  • Page 22: The Plug-In Modules

    RS-1600-X24 User Guide 1.3 The Plug-in Modules An RS-1600-X24 Enclosure requires one or more of the following modules for normal operation: 1.3.1 Power Supply/Cooling Module Two Power Supply/Cooling modules (Figure 1–5) are supplied mounted in the rear of the enclosure as part of the Subsystem core product.

  • Page 23: Operators Panel

    1.3.1.1 Multiple Power Supply/Cooling Modules The RS-1600-X24 system must always be operated with two Power Supply/Cooling modules fitted. The two Power Supply/Cooling modules operate together so that if one fails the other maintains the power supply and cooling while you replace the faulty unit.

  • Page 24: Loop Resiliency Circuit Input/Output Module (Fc-Al)

    Select Functions using the hardware switches Not Used Caution All mandatory settings must be observed in order for the RS-1600-X24 system to function correctly. Note To set Host 1Gb use the Ethernet connected configurator. 1.3.3 Loop Resiliency Circuit Input/Output Module (FC-AL)
  • Page 25 Introduction • Expansion Port 1 Rx Good (Green) • ESI/LRC module fault LED (Amber) • Cache Active (Green) • RAID Controller Activity – Ready (Green) – Host Activity of either host channels (Flash off) • Battery Fault (Amber) Figure 1–7 LRC Panel Layout Important Fitting of a RAID controller to the LRC module is a factory only operation.
  • Page 26 RS-1600-X24 User Guide Figure 1–8 X24 LRC (Storage Manager) I/O Module Warning Do not attempt to lift the enclosure by means of the extended SM module Figure 1–9 RS-1600-X24 Enclosure with Storage Manager Modules and PSUs Installed...

  • Page 27: Drive Carrier Module

    Introduction The Storage Manager module operates at 1 or 2 Gb. • Two external ports for expansion to further enclosures are provided by SFP connectors • Two external ports to the host controllers are provided from SM module all Form Factor (SFP) GBIC modules, auto-bypass at the output ports is provided.

  • Page 28: Dummy Carrier Modules

    RS-1600-X24 User Guide 1.3.4.1 Drive Status Indicators Each drive carrier incorporates two indicators, an upper (Green) and lower (Amber). In normal operation the green indicator will be ON and will flicker as the drive operates. 1.3.4.2 Anti-tamper Locks Anti-tamper locks are fitted in the drive carrier handles (Figure 1–11) and are provided to disable the...

  • Page 29: Installing Your X24 Subsystem

    Introduction 1.5 Installing your X24 Subsystem Please refer to the RS-1600-X24 Getting Started Manual (P/N 44521-01A) for information on how to install your RS-1600-X24 Enclosure and plug-in modules into an industry standard 19 inch rack cabinet. 1.6 RS-1600-X24 Technical Specification 1.6.1 Dimensions...

  • Page 30: Psu Safety And Emc Compliance

    RS-1600-X24 User Guide 1.6.4 PSU Safety and EMC Compliance Safety Compliance UL 60950 IEC 60950 EN 60950 EMC Compliance CFR47 Part 15B Class A EN55022 EN55024 1.6.5 Power Cord (minimum requirements) Cord Type SV 0r SVT, 18 AWG minimum, 3 conductor...

  • Page 31: Interfaces

    Cable length: as above 1.6.8 Drive Carrier Module Specification Please contact your supplier for details of approved drives. Important Operating the RS-1600-X24 Subsystem with non-approved drives may invalidate the warranty. Module Dimensions Height 29.1mm Width 106.55mm Depth 207mm Weight 0.88kg (1.0” 36Gb drive) Operating 5°...

  • Page 32: X24 Fc-Al Lrc I/O Module Specification

    RS-1600-X24 User Guide 1.6.9 X24 FC-AL LRC I/O Module Specification LRC-X24 Speed 2Gb • Creates connections to 2 x 8 drive mode dual loop structures • 2 external Expansion ports, SFP connectors • 2 Host SFP ports • 1 Ethernet port...

  • Page 33: Operation

    Chapter 2 Operation 2.1 Before You Begin Before powering up your RS-1600-X24 enclosure please ensure that all the modules are firmly seated in their correct bays. 2.2 Power On Do not operate the Subsystem until the ambient temperature is within the specified operating range. If the drives have been recently installed ensure they have had time to acclimatize before operating them.

  • Page 34: Power Supply/Cooling Module Leds

    RS-1600-X24 User Guide 2.2.1 Power Supply/Cooling Module LEDs The Power Supply/Cooling module incorporates 4 LEDs, located below the On/Off switch and shown in Table 2–1. • Under Normal conditions the LEDs should all be illuminated constant GREEN • If a problem is detected the color of the relevant LED will change to AMBER.
  • Page 35 Operation Table 2–2 Ops Panel LED States Ops Panel LEDs Other Associated State Description LEDs or Alarm Power PSU/ System Address FC-X24 (Green) Cooling/ (Amber) Mode Loop Temp Error Speed (Amber) (Amber) 5V Aux present, overall power failed single beep, then Ops Panel power On (5s) test state double beep Power On, all functions good...

  • Page 36: Starting The Drives

    RS-1600-X24 User Guide 2.4 Starting the Drives All drives in the enclosure should automatically start their motors. If this has not occurred there may be a power problem (an alarm and power fault indication would normally be active). if there is only one Power Supply/Cooling Module present, the drive motors will spin up in a delayed sequence.

  • Page 37: X24 Raid Management

    RAID Management Chapter 3 X24 RAID Management 3.1 Managing Arrays and Partitions Using SAM Using SAM, you can manage arrays and partitions. You can perform the following array-related functions: • Manage arrays (see page – View array and drive status (see page –...

  • Page 38: Managing Arrays

    RS-1600-X24 User Guide • Partitions – Adding a partition – Expanding a partition • Managing spares 3.2 Managing Arrays SAM lets you manage your arrays in a variety of ways. You can: • View array and drive status (see page •...

  • Page 39: Viewing Array And Partition Statistics

    RAID Management 3.3.1 Viewing Array and Partition Statistics You can view the current array and partition rate and cumulative statistics. The following statistics are available: • Rate statistics – I/O operations per second (IOPS) – Bandwidth (in millions of bytes per second) •...

  • Page 40: Verifying An Array

    RS-1600-X24 User Guide Note You cannot reset the queue depth value. It always reflects the current I/O queue depth. To reset all statistics: From SAM, select Monitor X24 Subsystem > Statistics > Reset All Statistics. The Reset All Statistics page displays.

  • Page 41: Changing Array Ownership

    RAID Management Click Abort Array Verification. 3.3.3 Changing Array Ownership You can change the ownership of any array between the SMs. When you create an array, SAM automatically selects the owner and balances the number of arrays each SM owns. You can select the array owner when you create an array by clicking Advanced Options from the third Create Array page.

  • Page 42: Deleting An Array

    RS-1600-X24 User Guide • One or more disks of an array start up more slowly or were powered on after the rest of the disks in the array. This causes the date and time stamps to differ, which the X24 Subsystem interprets as a problem with the “late”...

  • Page 43: Managing Partitions

    RAID Management 3.4 Managing Partitions The SAM software lets you manage partitions in a variety of ways. You can: • View partition status information (see page • Change a partition name (see page • Change a partition LUN (see page •...

  • Page 44: Changing A Partition Lun

    RS-1600-X24 User Guide In the Change Name panel, enter the new name. You can use up to 20 characters. You can use any character on your keyboard (any printable ASCII character), except double quotes ("). Click Change Partition Name. 3.4.3 Changing a Partition LUN You can change the LUN assigned to a partition, as it appears under the X24 Subsystem’s target ID from...

  • Page 45: Controlling Partition Access

    RAID Management 3.4.4 Controlling Partition Access The X24 Subsystem’s InfoShield capability lets you specify which hosts can access each partition. This gives you complete control of array access based on your specific needs. Figure 3–1 shows an example of how you can use InfoShield. Web server Engineering Accounting...
  • Page 46 RS-1600-X24 User Guide restart the X24 Subsystem unless you have given the host a nickname. The list includes the last 64 hosts that started or that you gave a nickname. You can determine which WWN is for which host by starting one host at a time or scanning for devices from a host, then viewing the WWN list.
  • Page 47 RAID Management 3.4.4.3 Configuring InfoShield Once you set up host nicknames, you can easily set up your InfoShield. This is where you determine which hosts can access each partition LUN. You set up InfoShield by either excluding or including hosts on a list for each partition LUN. The list can include or exclude up to 64 specific hosts or all hosts for each partition LUN.

  • Page 48: Changing The Read-Ahead Cache Size

    RS-1600-X24 User Guide If you selected Include Listed Hosts or Exclude Listed Hosts, you must create a host list. All hosts already on an include or exclude this for the partition are listed in the Host Table for Array panel.

  • Page 49: Deleting A Partition

    RAID Management In the Partition Read Ahead Size panel, select the size you want. The current size displays in the drop-down list with ** next to it. Click Set Read Ahead Cache Size. 3.4.6 Deleting a Partition You can delete a partition when you no longer need it and you want to use the space for another purpose. Caution Deleting a partition deletes all data contained in the partition.
  • Page 50 RS-1600-X24 User Guide...

  • Page 51: System Status

    System Status Chapter 4 System Status 4.1 Monitoring System Status Using SAM You should monitor your system regularly to ensure that the X24 Subsystem, disk drives, and arrays are working properly. The X24 Subsystem and SAM let you monitor the status several ways: •...

  • Page 52: Starting And Stopping Remote Notification

    RS-1600-X24 User Guide 4.2.1 Starting and Stopping Remote Notification You can start or stop remote notification at any time. If you start remote notification, be sure to select event categories or specific events to monitor. To start or stop remote notification: From SAM, select Manage X24 Subsystem >...

  • Page 53: Saving Log Information To A File

    System Status Enter the following information: • E-Mail Address 1 through 4: Enter up to four e-mail addresses you want to receive notification of X24 Subsystem events. Enter the addresses in the format: user_name@domain_name. • E-Mail Comment: Enter text that you want sent with e-mail messages. For example, you might want to identify something about the location, name, or use of this X24 Subsystem.

  • Page 54: Displaying Overall Statistics

    RS-1600-X24 User Guide When the File Download window displays, select “Save this file to disk” and click OK. Navigate to where you want to save the file, enter the file name, and click Save. The Download Complete window displays. Click Close.

  • Page 55: Resetting The All Statistics

    System Status 4.4.1 Resetting the All Statistics You can reset the following statistics to zero: • Read • Write • SecRd • SecWt • I/O Size Note Resetting statistics here resets all statistics for the X24 Subsystem. You may want to reset the statistics if you are monitoring performance. You may also want to reset statistics when you change how you are using the partition.
  • Page 56 RS-1600-X24 User Guide...

  • Page 57: Configuring The X24 System

    System Configuration Chapter 5 Configuring the X24 System SAM lets you configure settings and perform a variety of functions on the X24 Subsystem. You can: • Configure the LAN-related settings (page • Change the date and time (see page • View LUN information (see page •...

  • Page 58: Configuring The Lan-Related Settings

    RS-1600-X24 User Guide 5.1 Configuring the LAN-related Settings You can configure several LAN-related settings for the X24 Subsystem: • IP settings (refer to the X24 Subsystem Getting Started Guide) • Telnet settings (see page • SNMP settings (see page • System information (see page •...

  • Page 59: Configuring The System Information

    System Configuration 5.1.3 Configuring the System Information You can set four system information settings: • System Name: Name of the X24 Subsystem as seen by other systems on the LAN. You can enter up to 74 characters. The default is Uninitialized Name. •...

  • Page 60: Configuring The Security Options

    RS-1600-X24 User Guide To set SAM passwords: From SAM, select Manage X24 Subsystem > General Config > Passwords/Security. The Passwords/Security page displays. In the Password Configuration panel, enter the passwords you want. Click Change. 5.1.5 Configuring the Security Options You can enable or disable the following LAN-related functions: •...

  • Page 61: Changing The Date And Time

    System Configuration 5.2 Changing the Date and Time You can change the X24 Subsystem’s date and time. To set the X24 Subsystem’s date and time: From SAM, select Manage X24 Subsystem > General Config > Set Date/Time. The Set Date/Time page displays. In the Set X24 Subsystem System Date panel, select the month, day, and year.

  • Page 62: Viewing Lun Information

    RS-1600-X24 User Guide 5.3.1 Viewing LUN Information You can view information for each existing LUN. To view LUN information: From SAM, select Monitor X24 Subsystem > Status > LUN Information. The LUN Information page displays listing each existing LUN along with the node WWN, array name, and partition name.

  • Page 63: Controlling Host Access To The X24'S Write-Back Cache Setting

    System Configuration Subsystem will not function. You must resolve the problem and restart the X24 Subsystem. If the problem is not resolved, it will shut down again. Alarm conditions trigger an event message that displays in the event log. Table 5–1 shows the temperature and voltage thresholds for each alarm and how to resolve the problem.

  • Page 64: Enabling And Disabling The Battery

    RS-1600-X24 User Guide 5.7 Enabling and Disabling the Battery If you are not using a battery in your X24 Subsystem, the X24 Subsystem will sound an alarm. To eliminate the alarm, you can disable the battery. The default setting is battery enabled.

  • Page 65: Rescanning All Ports

    System Configuration 5.9 Rescanning All Ports You can tell the X24 Subsystem to scan all disk ports for new or removed disk drives. You can use this option when you install or remove disk drives. The rescan temporarily pauses all I/O processes, then resumes normal operation.

  • Page 66: Saving And Restoring A Configuration File

    RS-1600-X24 User Guide 5.11 Saving and Restoring a Configuration File You can save all of your X24 Subsystem configuration settings to a file and restore that file. 5.11.1 Saving a Configuration File You can save all of your X24 Subsystem configuration settings to a file. This lets you make a backup of your settings.
  • Page 67 System Configuration Select the option you want: • Use Current IP Addresses: Restores the configuration file to the X24 Subsystem that SAM is currently connected to and retains the currently assigned IP addresses. Use this to restore a backup configuration file to the current X24 Subsystem without changing the IP addresses of the X24 Subsystem.

  • Page 68: Viewing And Restoring Default Settings

    RS-1600-X24 User Guide 5.12 Viewing and Restoring Default Settings You can view and restore all of the X24 Subsystem’s default settings. 5.12.1 Viewing Default Settings You can view the X24 Subsystem’s default settings as well as the current settings. To view the default settings: •...

  • Page 69: Updating Software

    System Configuration 5.13 Updating Software You can update the X24 Subsystem software from SAM using a software package file. Information regarding the latest release of software and software package files are available from your supplier. SAM automatically updates only those types of software that require updating. Note You should always update the software on both Storage Manager modules.
  • Page 70 RS-1600-X24 User Guide...

  • Page 71: Managing Disk Drives & Enclosures

    Drive & Eclosure Management Chapter 6 Managing Disk Drives & Enclosures SAM lets you control a variety of functions related to devices and enclosure management processor (EMP) enclosures connected to your X24 Subsystem. • For devices, you can: – Display device information (see page –...

  • Page 72: Clearing Metadata From A Disk Drive

    RS-1600-X24 User Guide 6.1.1.1 Displaying All Devices You can display a list of all connected devices. For more information about the fields that display for each device, click Page Help near the bottom of the page. Disk drives that are not members of any array are listed as Available. Drives that contain leftover metadata from a previous array are listed as Leftover.

  • Page 73: Enabling And Disabling Write-Back Cache

    Drive & Eclosure Management 6.1.3 Enabling and Disabling Write-back Cache You can control the write-back cache setting for all of your disk drives at once. Changes take effect after the next rescan or restart. This can be set to Enable, Disable, or Don’t Modify (which means the X24 Subsystem should not change any disk drive’s write-back cache settings).

  • Page 74: Blinking A Drive Led

    RS-1600-X24 User Guide When you enable SMART, the SMART events are recorded in the event log, which lets you monitor your disk drives or analyze why a disk drive failed. For more information about the event log, refer to the X24 Subsystem Getting Started Guide.

  • Page 75: Testing A Disk Drive

    Drive & Eclosure Management Before you can use the disk drive again, you must clear its metadata. SeeAppendix F section 6.1.2, ”Clearing Metadata from a Disk Drive”, on page 6.1.8 Testing a Disk Drive This function issues a Test Unit Ready (TUR) command to the selected disk drive. This just tells you that the disk drive can respond, but it still may not be functioning properly.

  • Page 76: Changing The Additional Emp Setting

    RS-1600-X24 User Guide set it to NONE, which tells the X24 Subsystem not to present a LUN for this EMP under the X24 Subsystem’s target ID. You can set LUNs for EMPs that you plan to add by assigning a LUN to the EMP ID you want to use. The X24 Subsystem assigns EMP IDs sequentially each time it starts.

  • Page 77: Troubleshooting And Problem Solving

    Green “Signal Good” LED on LRC Not Lit Check that the Rx and Tx cables have not been inverted during installation. 7.1.1.4 Computer Doesn’t Recognize the RS-1600-X24 Subsystem Check that the FC-AL interface cables from the RS-1600-X24 enclosure to the host computer are fitted correctly.

  • Page 78: Leds

    RS-1600-X24 User Guide Check the Drive Select ID settings on your RS-1600-X24 Subsystem and on your system host. Check that the LEDs on all installed drive carrier modules are illuminated Green. Note that the drive LEDs will not be lit during drive spinup.

  • Page 79: Audible Alarm

    X24 Troubleshooting Warning Whenever replacing a module NEVER leave an EMPTY space in the rear of the enclosure, obtain a replacement before removing the problem part. Figure 7–1 Ops Panel 7.3 Audible Alarm The Ops Panel also includes an Audible Alarm which indicates when a fault state is present. The following conditions will activate the Audible Alarm: •...

  • Page 80: Troubleshooting

    RS-1600-X24 User Guide 7.4 Troubleshooting The following sections describe common problems, with possible solutions, which can occur with your RS-1600-X24 system Table 7–2 Ops Panel LED States Ops Panel LEDs Other Associated State Description LEDs or Alarm Power PSU/ System...

  • Page 81: System Faults

    X24 Troubleshooting 7.4.1 System Faults Symptom Cause Action 1 The SYSTEM LED will The ESI processor 1 Check for other AMBER LED indications on the illuminate AMBER on has detected an Power Supply/Cooling modules. If there is a the LRC internal fault (e.g.

  • Page 82: Thermal Control

    RS-1600-X24 User Guide 7.4.3 Thermal Control The RS-1600-X24 Enclosure uses extensive thermal monitoring and takes a number of actions to ensure component temperatures are kept low and also to minimize acoustic noise.Air flow is from front to rear of the enclosure.

  • Page 83: Thermal Alarm

    X24 Troubleshooting 7.4.4 Thermal Alarm Symptom Cause Action 1 Ops Panel FAULT If the internal temperature 1 Check local ambient environment LED AMBER. measured in the airflow through temperature is below the upper 40°C the enclosure exceeds a pre- specification. 2 An AMBER LED on set threshold a thermal alarm one or more Power...

  • Page 84: Auto Start Failure

    Warning If the RS-1600-X24 Subsystem is powered up and you remove any module, replace it immediately. If the Subsystem is used with modules or module blanks missing for more than a few minutes, the Enclosure can overheat, causing power failure and data loss. Such use will invalidate the warranty.

  • Page 85: Host Fibre Channel Problems

    X24 Troubleshooting Problem: SAM pages do not display properly. • Be sure that your system meets the system requirements described in the X24 Subsystem Getting Started Guide. • Configure your browser according to the information in the X24 Subsystem Getting Started Guide. •...

  • Page 86: Array Problems

    RS-1600-X24 User Guide 7.10 Array Problems Problem: Array is much smaller than it should be. The backoff percent may be set higher than 1%, which is causing the array to be much smaller than the full size of its member disks.

  • Page 87: X24 Subsystem Problems

    Problem: The X24 Subsystem reports an SDRAM memory error. Contact your supplier. 7.12 Replacing a Module Please refer to the RS-1600-X24 Getting Started Manual (P/N 44521-01A) for information on the initial installation of the plug-in modules in the RS-1600-X24 enclosure. Warning Observe all conventional ESD precautions when handling RS-1600-X24 modules and components.
  • Page 88 RS-1600-X24 User Guide With the PSU handle (Figure 7–3) in the open position, slide the module into the enclosure Cam the module home by manually closing the PSU handle (see Figure 7–4). A click should be heard as the handle latches engage (see Figure 7–2).
  • Page 89 X24 Troubleshooting Figure 7–3 Removing a Power Supply/Cooling Module (2) Figure 7–4 Removing a Power Supply/Cooling Module (3)

  • Page 90: Ops Panel

    The Ops Panel is an integral part of the enclosure chassis assembly and can only be replaced by trained personnel. 7.12.3 Storage Manager Module Please refer to the RS-1600-X24 Getting Started Manual (P/N 44521-01A) for full information on installing the Storage Manager module. Important Fitting of a RAID controller to the LRC module is a factory only operation.
  • Page 91 X24 Troubleshooting Figure 7–6 Removing a Storage Manager Module (2) 7.12.3.2 Inserting the Module With the latch in the open position, slide the LRC module into the enclosure until the latch engages automatically. Cam the module home by manually closing the latches (see Figure 7–7).

  • Page 92: Insertion/Removal Of Sfp Modules

    RS-1600-X24 User Guide 7.12.4 Insertion/Removal of SFP Modules The LRC Module is fitted with four Small Form Factor (SFP) GBIC modules. Replacement of these modules should be performed in accordance with the following procedure: Press down firmly on the removal tab located at the bottom of the cable.

  • Page 93: Drive Carrier Module

    Figure 7–8 Storage Manager Module - Battery Assembly Location 7.12.6 Drive Carrier Module Please see the RS-1600-X24 Getting Started Manual (P/N 44521-01A) for information on the initial installation of the plug-in modules in the RS-1600-X24 enclosure. Warning Observe all conventional ESD precautions when handling RS-1600-X24 modules and components.

  • Page 94: Terminal Emulator And Com Port Problems

    RS-1600-X24 User Guide Problem: X24 Subsystem failed the onboard memory test. When this failure occurs, it means the internal CPU memory failed. Contact your supplier for a replacement. Problem: System hangs at Loading Bridge during BFLU Loader Menu. Update the software to ensure you are using the latest version. See section 5.13, ”Updating Software”,...

  • Page 95: Warning And Error Events

    X24 Troubleshooting The probable cause of this problem is a bad RS-232 cable connection or swapped transmit/receive lines. If the cable is properly connected on both ends, try a null modem adapter that will reverse the RS-232 transmit and receive signals. The need for a null modem adapter depends on the RS-232 cable you are using.

  • Page 96: Warnings

    RS-1600-X24 User Guide 7.15.1 Warnings Warning events let you know that something related to the X24 Subsystem or an array has a problem. You should correct the problem as soon as possible. Table 7–4 defines each warning event and recommends the action you should take.
  • Page 97 X24 Troubleshooting Table 7–4 Warning events (Continued) Event Definition Recommended Action OTHER WWN The host Fibre Channel World Wide The online Storage Manager module UNKNOWN Names (node and port) previously recovers from this situation by presented by the other SM module fabricating a WWN for the other SM (which is currently offline) in this module based on its own serial...

  • Page 98: Errors

    RS-1600-X24 User Guide Table 7–4 Warning events (Continued) Event Definition Recommended Action SYS OFFLINE The system attempted to use Put This Put Offline request may occur FAIL Offline on an SM, but the request was when you press one of the module rejected, probably because availability latches to remove the module.

  • Page 99: Setting Up And Viewing The Debug Log

    X24 Troubleshooting Table 7–5 Error events (Continued) Event Definition Recommended Action SDRAM A non correctable multiple-bit cache Contact your Supplier. UNCORR ECC memory ECC error occurred. VOLT/TEMP FAIL The analog-to-digital convertor Check that the X24 Subsystem’s fans are monitored a temperature or voltage running.

  • Page 100: Configuring Debug Logs

    RS-1600-X24 User Guide 7.16.2.1 SAM: Manage/Utilities/Debug Utilities/Save Debug Logs/Save Log Files You may optionally enter contact information, which will be included in the log information file. By doing so, your contact information and comments will help create a unique document that may be used to identify the issue and origin when these logs are being collected for diagnostic purposes.

  • Page 101: Using Sam To Set Up And View The Debug Log

    X24 Troubleshooting 7.16.4 Using SAM to Set Up and View the Debug Log You can select additional events, which are not normally logged, for the debug log. Under normal conditions, you should not have any of the events selected. The additional events have a slight effect on read and write performance.

  • Page 102: Using The Loader Utility Menu

    RS-1600-X24 User Guide 7.18 Using the Loader Utility Menu If you have any diagnostic errors, contact X24 technical support. 7.19 Understanding Disk-related Errors The event log includes errors reported by EMPs and disk drives on your system. If you see these errors in the event log, the information below may assist you.

  • Page 103: Disk Channel Errors

    X24 Troubleshooting Table 7–7 ?Common ASC and ASCQ descriptions ASCQ Descriptions Write error—auto-reallocation failed Write error—recommend reassignment Unrecovered read error Read retries exhausted Error too long to correct Multiple read errors Unrecovered read error—auto-reallocation failed Unrecovered read error—recommend reassignment Unrecovered read error—recommend rewrite the data 00/01 FC CRC error Initiator-detected error message received...

  • Page 104: Voltage And Temperature Errors And Warnings

    RS-1600-X24 User Guide Table 7–8 Disk channel error codes (Continued) Error Code Description QueueFull Target reported queue full status. Stat: 04 Data overrun or underrun occurred while getting sense data. Stat: 05 Request for sense data failed. Stat: 32 Target has been reserved by another initiator.

  • Page 105: Spare Parts And Ancillary Items

    X24 Troubleshooting 7.21 Spare Parts and Ancillary Items The following replaceable parts are available for the RS-1600-X24 Subsystem: • Chassis (including Backplane) – RS232 cable • AC Power Supply/Cooling Module – LAN cable • Drive Carrier Module • 19 inch rack mounting rail kit •...
  • Page 106 Mode 2, 2x8 mode. Mandatory SOFT SELECT Select Functions using the hardware switches Not Used Caution All mandatory settings must be observed in order for the RS-1600-X24 system to function correctly. Note To set Host 1Gb use the Ethernet connected configurator.

  • Page 107: A Array Basics

    Array Basics Appendix A Array Basics X24 RAID controllers let you set up and manage disk arrays. A disk array (array) is a group of disks that appears to the system as a single virtual disk. This is accomplished through software resident in the RAID controller.

  • Page 108: Array Types

    RS-1600-X24 User Guide A.1 Array Types Array types are defined by their RAID level, a number from 0 through 5 (a higher RAID level does not necessarily indicate a higher level of performance or fault tolerance). X24 RAID controllers let you create the types of arrays that have proven to be the most useful for RAID applications: RAID 0, 1, 10 (also known as mirrored), 3, 4, 5, 50, and volume sets.

  • Page 109: Raid 4

    Array Basics RAID 3 is not well suited for transaction processing or other applications that require simultaneous reads and writes. A.1.4 RAID 4 RAID 4 is similar to RAID 3 in that the redundant information is achieved in the form of parity data. The user data is distributed across all but one of the disks.

  • Page 110: Comparing Raid Levels

    RS-1600-X24 User Guide A.2 Comparing RAID Levels Table 1–2 illustrates the differences between the different RAID levels. Table 1–2 Comparing RAID levels RAID Level Min No. of Drives Description Strengths Weaknesses RAID 0 Data striping without Highest performance No data protection—one drive...

  • Page 111: Mixing Disks From Different Manufacturers Or With Different Capacities

    Array Basics Table 1–2 Comparing RAID levels (Continued) RAID Level Min No. of Drives Description Strengths Weaknesses RAID 10 Combination of RAID 0 Highest performance and High redundancy cost overhead; (Also known (data striping) and RAID data protection (can tolerate because all data is duplicated, as mirrored) 1 (mirroring)
  • Page 112 RS-1600-X24 User Guide...

  • Page 113: B Accessing Disk Array Administrator Software

    Accessing DAM Appendix B Accessing Disk Array Administrator Software The remaining appendices of the Guide describe how to manage your X24 Subsystem using the menu- based Disk Array Administrator. You can display and change a variety of settings using the Disk Array Administrator software. Using the Disk Array Administrator, you can: •...

  • Page 114: Accessing The Disk Array Administrator Using The Rs-232 Serial Port

    RS-1600-X24 User Guide You can perform other configuration functions from either SM and have the same changes made automatically on the other SM: • Managing pool spares • Configuring host channels • Configuring disk channels • Configuring the following X24 Subsystem settings: –...
  • Page 115 Accessing DAM To access the Disk Array Administrator software using the RS-232 serial port: From the computer connected to the X24 Subsystem, start your terminal emulation software. Be sure that your terminal emulation software is set to use the correct COM port on your computer. See section 7.14, ”Terminal Emulator and COM Port Problems”, on page 76 for more details on how the X24...

  • Page 116: Accessing The Disk Array Administrator Using The Ethernet Port

    RS-1600-X24 User Guide You can now perform all of the functions described in the following chapters. All steps start from the System Menu. B.2 Accessing the Disk Array Administrator Using the Ethernet Port You can access the Disk Array Administrator software using the Ethernet port and Telnet. Windows users may want to obtain a terminal emulator program such as HyperTerminal Private Edition from Hilgraeve that supports both Telnet protocol and serial port protocol.

  • Page 117: Accessing The Disk Array Software Using The Ethernet Port

    Accessing DAM • Using the serial connection to the SM and setting the address. See H.2.1, ”Configuring the IP Settings”, on page 214. Once you set the IP address and subnet mask, you can use the steps in the next section to access the Disk Array Administrator software.
  • Page 118 RS-1600-X24 User Guide If needed, enter the port number. The default port is 23. The Enter Password screen displays. Enter your password and press Enter. There is no default password. If you have not set up a password, just press Enter.

  • Page 119: Navigating The Disk Array Administrator Software

    Accessing DAM You can now perform all of the functions described in the following chapters. All steps start from the System Menu. B.3 Navigating the Disk Array Administrator Software You can navigate the Disk Array Administrator software using your keyboard. Table 2–1 describes the primary navigation and selection methods.

  • Page 120: Changing The Screen Display

    RS-1600-X24 User Guide Note After four minutes of inactivity, the Disk Array Administrator software times out and returns to the initial screen. B.3.1 Changing the Screen Display After you have accessed the Disk Array Administrator software, you can change the screen display using a combination of keystrokes, as shown on the System Menu.

  • Page 121: Disk Array Administrator Menu Tree

    Accessing DAM B.3.2 Disk Array Administrator Menu Tree Figure 2–1 Figure 2–2 describe the complete Disk Array Administrator menu hierarchy. In the Disk Array Administrator, menu options that are not accessible appear gray. For example, the Array Menu is not accessible unless one or more arrays exist. Array Menu #1-7 Array Status Verify Function...
  • Page 122 RS-1600-X24 User Guide Set Date/Time Set Time Set Date Host Configuration Topology Link Speed Target ID CAPI LUN Channel Configuration Link speed Configuration Menu Initiator ID Set Date/Time Host Configuration Channel Configuration EMP LUNS EMP Settings EMP Configuration Disk Configuration...

  • Page 123: C Creating And Managing Arrays & Partitions

    Managing Arrays & Partitions Appendix C Creating and Managing Arrays & Partitions Using the Disk Array Administrator, you can create and manage arrays and partitions. You can perform the following array-related functions: • Create arrays (see page 105) • Manage arrays (see page 116) •...

  • Page 124: Creating A Single-Partition Array

    RS-1600-X24 User Guide Note Before you create more than one array, you must be sure that your host operating system supports multiple logical unit numbers (LUNs). Most operating systems do, or have an option you can enable to support multiple LUNs. If your operating system does not support multiple LUNs, the host will only be able to see one array at LUN 0.
  • Page 125 Managing Arrays & Partitions You can use up to 20 characters. You can include any characters in the name, including spaces. If you do not want to name the array, you can just press Enter. You can add or change the name later. The system asks if you want to create one partition now for the entire array.
  • Page 126 RS-1600-X24 User Guide Note A RAID 10 array is created when there are more than two drives in a mirrored array. , ”Array Basics”, on page 89, for more information. If you selected RAID 50 as the array type, the Select RAID 50 Array Size screen displays (not shown) with all possible configurations for the array and drive combinations.
  • Page 127 Managing Arrays & Partitions Select the drives you want to use for the array and press Enter. You select a drive by highlighting it and pressing Enter. Each selected drive turns gray in the drive list. After you press Enter for the number of drives you entered previously, the system automatically goes to the next screen.
  • Page 128 RS-1600-X24 User Guide You select a drive by highlighting it and pressing Enter. Each selected drive turns gray in the drive list. After you press Enter for the number of drives you entered previously, the system automatically goes to the next screen. To skip a drive, use the ↑ or ↓ key.

  • Page 129: Creating A Multiple-Partition Array

    Managing Arrays & Partitions The system confirms that you want to create the array. Select Yes and press Enter. A message notifies you that the array is being created and shows the progress of the initialization process. The array initialization process takes from several minutes to more than an hour depending on the array type (volume, RAID 0, and RAID 1 are the fastest), array size, drive speed, and other processes running on the X24 Subsystem.
  • Page 130 RS-1600-X24 User Guide Select the RAID type: RAID0, RAID3, RAID4, RAID5, RAID50, VOLUME (a single drive similar to just a bunch of disks (JBOD) except that it includes metadata), or MIRRORED and press Enter. Note A RAID 10 array is created when there are more than two drives in a mirrored array.
  • Page 131 Managing Arrays & Partitions Enter the number of drives (excluding spares) you want in the array and press Enter. The Select Drives screen displays (shown below). The list includes all available drives, that is, drives that are not members of an array and are not assigned as a dedicated or pool spare, on either SM: •...
  • Page 132 RS-1600-X24 User Guide Select the drives you want to use for the array and press Enter. You select a drive by highlighting it and pressing Enter. Each selected drive turns gray in the drive list. After you press Enter for the number of drives you entered previously, the system automatically goes to the next screen.
  • Page 133 Managing Arrays & Partitions You select a drive by highlighting it and pressing Enter. Each selected drive turns gray in the drive list. After you press Enter for the number of drives you entered previously, the system automatically goes to the next screen.

  • Page 134: Managing Arrays

    RS-1600-X24 User Guide The system confirms that you want to create the array. Select Yes and press Enter. A message notifies you that the array is being created and shows the progress of the initialization process. The array initialization process takes from several minutes to more than an hour depending on the array type (volume, RAID 0, and RAID 1 are the fastest), array size, drive speed, and other processes running on the X24 Subsystem.

  • Page 135: Viewing Array And Drive Status Information

    Managing Arrays & Partitions C.2.1 Viewing Array and Drive Status Information Array and drive status information is available in two ways: • View array status (see page 117) • View drive status (see page 119) C.2.1.1 Viewing Array Status You can view the status of an array, including the following information: •...
  • Page 136 RS-1600-X24 User Guide Select the array you want and press Enter. The array menu displays. Select Array Status and press Enter The status screen displays showing the status of the array you selected.
  • Page 137 Managing Arrays & Partitions Press Esc to return to the Array Menu. C.2.1.2 Viewing Drive Status You can view the status of the drives in an array, including the following information: • Drive number: The drive’s sequential position in the X24 Subsystem’s drive list. •...

  • Page 138: Stopping The Array Initialization Process

    RS-1600-X24 User Guide Select the array you want and press Enter. The array menu displays. Select Drive Status and press Enter The drive status screen displays showing the drives that are members of the array and that are assigned as dedicated spares.

  • Page 139: Adding A Partition

    Managing Arrays & Partitions Select Yes and press Enter. C.2.3 Adding a Partition If you created a multiple-partition array, you must create at least one partition on the array before you can use the array. You can create partitions on a multiple-partition array until you use all of the free space. For more information about partitions, see C.3.1, ”Understanding Partitions”, on page 133.
  • Page 140 RS-1600-X24 User Guide Enter the size you want to make the partition and press Enter. The Partition Name screen displays. Enter a name for the partition and press Enter. You can use up to 20 characters. You can include any characters in the name, including spaces. If you...

  • Page 141: Verifying An Array

    Managing Arrays & Partitions The LUN screen displays. Select the LUN for the partition and press Enter. The LUN that displays is the suggested default LUN assignment. Note Most UNIX, Linux, and Macintosh operating systems require that the CAPI LUN, which is the LUN assigned to each SM, be set to a higher value than all array LUNs.
  • Page 142 RS-1600-X24 User Guide You may want to verify an array when you suspect there is a problem. To verify an array: From the System Menu, select Array Menu and press Enter. The Select Array screen displays with a list of existing arrays.
  • Page 143 Managing Arrays & Partitions To return to the verification menu, press Esc. To check the progress of the array verification, you can use the verification status described below or select Array Menu from the System Menu. The status of the verification displays in the list of arrays.

  • Page 144: Reconstructing An Array

    RS-1600-X24 User Guide To stop the verification process: From the System Menu, select Array Menu and press Enter. The Select Array screen displays with a list of existing arrays. Select the array you want and press Enter. The array menu displays.
  • Page 145 Managing Arrays & Partitions The number of drives you can add to an array depends upon the RAID level as shown in Table 3–2. You also cannot exceed the maximum number of drives for each RAID level. See C.1, ”Creating Arrays”, on page 105.
  • Page 146 RS-1600-X24 User Guide Enter the number of drives you want to add and press Enter. The Select Drives screen displays. Select the drives you want to add from the list of available drives and press Enter. Only available drives, that is, drives that are not members of an array and are not assigned as dedicated...

  • Page 147: Changing An Array Name

    Managing Arrays & Partitions You select a drive by highlighting it and pressing Enter. Each selected drive turns gray in the drive list. After you press Enter for the number of drives you entered previously, the system automatically begins the expansion. To skip a drive, use the ↑ or ↓ key. To toggle the display between the drive model number, serial number, and the node and WWN, press T.

  • Page 148: Changing Array Ownership

    RS-1600-X24 User Guide Select Yes and press Enter. C.2.8 Changing Array Ownership You can change the ownership of any array between the SMs. You might want to change ownership if you plan to replace or repair one SM. Changing ownership lets you continue using an array without interruption and makes the array visible on the SM you change it to.

  • Page 149: Deleting An Array

    Managing Arrays & Partitions Select Option Configuration and press Enter. The Option Configuration Menu displays. Select Enable Trust Array and press Enter The Enable Trust Array screen displays. Select Enable and press Enter. The option is only enabled until you use it. After you trust an array, the option reverts back to being disabled.
  • Page 150 RS-1600-X24 User Guide Select the array you want to delete and press Enter. The system asks you to confirm the deletion. Select Yes and press Enter.

  • Page 151: Managing Partitions

    Managing Arrays & Partitions C.3 Managing Partitions The Disk Array Administrator software lets you manage partitions in a variety of ways. You can: • View partition status information (see page 117) • Add a partition (see page 121) • Expand a partition (see page 139) •...

  • Page 152: Viewing Partition Status Information

    RS-1600-X24 User Guide You can only expand a partition into contiguous, following, free space. In Figure 3–2, you can expand partition 1 or you can create additional partitions in the free space. After you partition all of the free space, you can expand the size of a partition only by deleting a partition that follows (has a higher number than) the one you want to expand.
  • Page 153 Managing Arrays & Partitions • Percentage of total array: The percentage of the total array that this partition represents. • Write-back caching: Status of the write-back cache (enabled or disabled) for this array. • InfoShield Type: Type of InfoShield set up on the partition. See C.3.8, ”Controlling Partition Access”, on page 144.
  • Page 154 RS-1600-X24 User Guide The status screen displays showing the status of the partition you selected. Press Esc to return to the partition menu. C.3.2.2 Viewing Partition Statistics You can view the current partition statistics. The following statistics are available: • Read: Total number of host read requests directed to the partition •...
  • Page 155 Managing Arrays & Partitions To view the partition statistics: Display the partition menu. From the Array Menu From the All Partitions Menu 1 From the System Menu, select Array Menu 1 From the System Menu, select All and press Enter. Partitions Menu and press Enter.
  • Page 156 RS-1600-X24 User Guide Press Esc to return to the statistics menu. C.3.2.3 Resetting Partition Statistics You can reset the following partition statistics to zero: • Read • Write • SecRd • SecWt • I/O Size Note Resetting statistics here also resets the statistics for this partition that are included in the aggregate statistics.

  • Page 157: Expanding A Partition

    Managing Arrays & Partitions To reset partition statistics: Display the partition menu. From the Array Menu From the All Partitions Menu 1 From the System Menu, select Array 1 From the System Menu, select All Menu and press Enter. Partitions Menu and press Enter. The Select Array screen displays with a list The Select Partition or Free Area of existing arrays.

  • Page 158: Changing A Partition Name

    RS-1600-X24 User Guide To expand a partition: Display the partition menu. From the Array Menu From the All Partitions Menu 1 From the System Menu, select Array Menu and 1 From the System Menu, select All press Enter. Partitions Menu and press Enter.

  • Page 159: Changing A Partition Lun

    Managing Arrays & Partitions Select Change Partition Name and press Enter. The Enter New Name screen displays. Enter the name you want to use and press Enter. You can use up to 20 characters. You can include any characters in the name, including spaces. The system confirms that you want to make the change.

  • Page 160: Changing The Read-Ahead Cache Size

    RS-1600-X24 User Guide C.3.6 Changing the Read-Ahead Cache Size You can change the read-ahead cache setting for each partition. This setting controls how much data the X24 reads ahead and stores in its cache memory during sequential reads. If you want to change this size, you should be prepared to monitor the system performance using the array statistics and adjust the size until you find the optimal size for your application.

  • Page 161: Enabling Or Disabling Write-Back Cache

    Managing Arrays & Partitions Select Read-Ahead Size and press Enter The Read-Ahead Size screen displays. Select the amount of data you want the Storage Manager to read ahead for this partition and press Enter. C.3.7 Enabling or Disabling Write-back Cache Important This function is not available with the current software level (January 2003).

  • Page 162: Controlling Partition Access

    RS-1600-X24 User Guide To enable or disable write-back cache: Display the partition menu. From the Array Menu From the All Partitions Menu 1 From the System Menu, select Array 1 From the System Menu, select All Menu and press Enter.
  • Page 163 Managing Arrays & Partitions Figure 3–5 shows an example of how you can use InfoShield. Web server Engineering Accounting Array C (single-partition array) accessed by all hosts Array A, partition 1 accessed by Accounting Array B, partition 1 Array A, partition 2 accessed by Engineering accessed by HR Array B, partition 3...
  • Page 164 RS-1600-X24 User Guide Select General InfoShield and press Enter. The General InfoShield screen displays. Select Display Host List and press Enter. The Display Host List screen displays showing the last 16 WWNs known to the X24 Subsystem. The WWNs are listed according to when they scanned for devices. The host that scanned for devices most...
  • Page 165 Managing Arrays & Partitions Note A host’s WWN is placed at the top of the known hosts list whenever the host performs a device discovery or bus scanning type of operation. Press Esc to return to the previous menu. C.3.8.2 Creating Nicknames for Host WWNs You can give the hosts on your SAN nicknames that you can easily recognize to make InfoShield easier to manage.
  • Page 166 RS-1600-X24 User Guide The Add or Name Host screen displays the last 16 known WWNs and host nicknames that you have set up. If you want to change the nickname, enter the new nickname in step 5. For more information, see C.3.8.1, ”Viewing Known WWNs”, on page...
  • Page 167 Managing Arrays & Partitions To set up InfoShield: Display the partition menu. From the Array Menu From the All Partitions Menu 1 From the System Menu, select Array 1 From the System Menu, select All Menu and press Enter. Partitions Menu and press Enter. The Select Array screen displays with a list The Select Partition or Free Area of existing arrays.
  • Page 168 RS-1600-X24 User Guide • Display Host List: Displays a list of the hosts currently on the include or exclude list for the selected partition. This option only displays hosts if you have already used Add Host to List and added one or more WWNs to an include or exclude list.

  • Page 169: Deleting A Partition

    Managing Arrays & Partitions the existing setting for each partition. However, the X24 Subsystem retains all existing include and exclude lists. If you use this option and later need to change back to your previous InfoShield settings, you must do so by changing the setting for each partition individually.
  • Page 170 RS-1600-X24 User Guide...

  • Page 171: D Monitoring System Status

    Monitoring System Status Appendix D Monitoring System Status D.1 Introduction Using the Disk Array Administrator, you can monitor your system. You should monitor your system regularly to ensure that the X24 Subsystem, disks, and arrays are working properly. The X24 Subsystem and Disk Array Administrator software let you monitor the status several ways: •...

  • Page 172: Displaying The Event Log

    RS-1600-X24 User Guide D.2 Displaying the Event Log The SM’s event log contains important information about the status of the X24, disks, and arrays. You should check it regularly for each SM to monitor the status of your system. Below is a list of some of the key warning and failure events included in the event log during operation: •...

  • Page 173: Viewing One Event At A Time

    Monitoring System Status display, the initial screen displays. The initial screen alternates between displaying the date, time, and temperature and the model number of your hardware. You can bypass all events by pressing Tab. D.2.2 Viewing One Event at a Time You can view an SM’s events one at a time.

  • Page 174: Viewing A Whole Screen Of Events

    RS-1600-X24 User Guide Press ↑ to see the previous event. You can continue to view earlier events by pressing ↑. Press Esc to return to the Event Log Menu. D.2.3 Viewing a Whole Screen of Events You can also view a SM’s events from the log file a whole screen at a time. This lets you quickly review all recent events.

  • Page 175: Capturing The Event Log

    Monitoring System Status Press U to page up or D to page down in the log or use the other keys as listed at the bottom of the screen to navigate within the event log. Keep pressing CTRL-E to page through the other information screens and return to the menu. D.2.4 Capturing the Event Log You can also capture a SM’s entire event log, which saves it to a file on your hard drive.

  • Page 176: Displaying Module Status Information

    RS-1600-X24 User Guide From the Transfer menu in HyperTerminal, select Capture Text, then select Stop. To capture the event log for the other SM, repeat steps through from the computer connected to the other SM. D.3 Displaying Module Status Information You can display status information about each of the modules in your X24 Subsystem.

  • Page 177: Displaying Hardware And Configuration Information

    Monitoring System Status D.4 Displaying Hardware and Configuration Information You can display the X24 Subsystem’s hardware and configuration information. This is where you can see what version of the firmware you have. Technical support personnel may request this information. You can display the hardware and configuration information two ways: •...
  • Page 178 RS-1600-X24 User Guide Table 4–1 Configuration information (Continued)(per SM) Group Field What displays Field What displays DISK 0 Online or Status of disk channel Speed 1 or 2 Gbit/sec as set in DISK 1 Offline based on whether a disk...
  • Page 179 Monitoring System Status Table 4–1 Configuration information (Continued)(per SM) Group Field What displays Field What displays CAPI Version Version of the Configuration Application Programming Interface. FC LIB Version Version of the FC software. Poll Rate Number of seconds as set Temperature ON or OFF as set in in the Disk Array...
  • Page 180 RS-1600-X24 User Guide Press Esc to return to the Utilities Menu. To display hardware and configuration information: From anywhere in the Disk Array Administrator software, press CTRL-E until the HW Info screen displays. The HW Info screen displays. Press U to page up or D to page down in the screen or use the other keys...
  • Page 181 Monitoring System Status Press CTRL-E again. The CFG Info screen displays. Press U to page up or D to page down in the screen or use the other keys as listed at the bottom of the screen to navigate within the CFG screen. Press CTRL-E to display the next screen of configuration information or Esc to return to where you started from.

  • Page 182: Capturing The Event Log, Hardware, And Configuration Information

    RS-1600-X24 User Guide D.5 Capturing the Event Log, Hardware, and Configuration Information You can capture and save the following information to a file on your hard drive: • Entire event log • All hardware information • All configuration information • All debug information that is turned on.

  • Page 183: Displaying Overall Statistics

    Monitoring System Status To display drive errors: From the System Menu, select Display Drives and press Enter. The Display Drives screen displays. If a drive has an E next to it, select the drive and press Enter to display the error information. Some errors are primarily for information purposes to help you diagnose drive and enclosure problems.

  • Page 184: Resetting Overall Statistics

    RS-1600-X24 User Guide different RAID levels to determine which level gives you the best performance. See , ”Array Basics”, on page 89 for more details on RAID levels Note The statistics are provided as general information for your use, however, they are not intended for benchmarking purposes.

  • Page 185: E Managing Spares

    Managing Spares Appendix E Managing Spares Using the Disk Array Administrator, you can manage spares. X24 RAID controllers automatically reconstruct redundant (fault-tolerant) arrays (RAID 3, RAID 4, RAID 5, RAID 50, and mirrored) if an array becomes critical and a properly sized spare drive is available. An array becomes critical when one or more member drives fails.

  • Page 186: Managing Dedicated Spares

    RS-1600-X24 User Guide E.1 Managing Dedicated Spares Dedicated spares are unused disk drives that you assign as a spare to a specific array. The disk must be as large as the smallest member of the array. You cannot use a dedicated spare drive as a member of an array or as a pool spare.

  • Page 187: Enabling Dynamic Spares

    Managing Spares Select the array you want and press Enter. The array menu displays. Select Delete Spare and press Enter. Select the spare drive you want to delete and press Enter. The system confirms the deletion. Select Yes and press Enter to delete the spare. The drive is now available for use in an array or as a spare.

  • Page 188: Managing The Spare Pool

    RS-1600-X24 User Guide Select Enabled and press Enter. The Rescan Rate screen displays. Enter the rescan rate in minutes. This tells the SM how often it should look for an available drive by rescanning the bus. Rescanning the bus frequently can affect performance. If you have an EMP, the dynamic spare configuration will not rescan the bus.

  • Page 189: Adding A Spare To The Spare Pool

    Managing Spares E.3.1 Adding a Spare to the Spare Pool You can add up to eight drives to the spare pool to reconstruct any critical array on the X24 Subsystem. After an array has started using a pool spare, other critical arrays are prevented from using it. For a pool spare to be used, it must be at least as large as the smallest drive in the array.
  • Page 190 RS-1600-X24 User Guide...

  • Page 191: F Managing Disk Drives And Enclosures

    Managing Drives & Enclosures Appendix F Managing Disk Drives and Enclosures Using the Disk Array Administrator, you can control a variety of functions related to disk drives and enclosure management processor (EMP) enclosures connected to your X24 Subsystem. • For drives, you can: –...
  • Page 192 RS-1600-X24 User Guide F.1.1.1 Displaying All Drives You can display a list of all connected drives. The information includes: • Loop ID • Size • Vendor • Model number (toggles with node WWN and serial number by pressing T) • Node WWN (toggles with model number and serial number by pressing T) •...
  • Page 193 Managing Drives & Enclosures To display all drives: From the System Menu, select Display Drives and press Enter. The Display Drives screen displays. If a drive has an E in the first column, select the drive and press Enter to display the error. To reset the error statistics, select Reset drive error statistics and press Enter.
  • Page 194 RS-1600-X24 User Guide • Size: Size of the drive in MB • Usage: If a member of an array, this displays the array name and member number. If a spare, this displays the type of spare. If unused, this displays Available. If the drive was part of an array that no longer exists, this displays Leftover.

  • Page 195: Clearing Metadata From A Drive

    Managing Drives & Enclosures F.1.1.3 Displaying Drive Errors and Resetting Error Statistics You can display drive errors for a specific drive. You know a drive has errors when you see the letter E in the first column of the Display Drives screen. To display drive errors: From the System Menu, select Display Drives and press Enter.
  • Page 196 RS-1600-X24 User Guide Typically, if your drives are part of an array, you do not want to turn on write-back cache on the drives. The X24 Subsystem is already using write-back cache to improve performance. Turning on write-back cache on the disk drive may improve performance in some cases, depending on the type of array and how you are using it.

  • Page 197: Displaying Disk Cache Status

    Managing Drives & Enclosures Select the option you want and press Enter. Restart or rescan to have your changes take effect. G.1.1, ”Shutting Down and Restarting the Current SM Module”, on page 190 G.10, ”Rescanning All Channels”, on page 206. F.1.4 Displaying Disk Cache Status You can display the cache status of each disk drive.
  • Page 198 RS-1600-X24 User Guide Select Display Drive Cache and press Enter The Select Drives screen displays. Select a drive and press Enter. The cache status screen displays showing the status of the read and write cache. Press Esc to return to the Drive Utilities Menu.

  • Page 199: Enabling And Disabling Smart Changes

    Managing Drives & Enclosures F.1.5 Enabling and Disabling SMART Changes You can enable or disable the ability to change the Self-Monitoring, Analysis and Reporting Technology (SMART) settings for all drives connected to the X24 Subsystem. This can be set to ENABLE, DISABLE, or DON’T MODIFY (which means the X24 Subsystem should not change any drive’s SMART settings).

  • Page 200: Blinking A Drive Led

    RS-1600-X24 User Guide F.1.6 Blinking a Drive LED You can blink the LED on a specific drive one of two ways: • From the Drive Utilities Menu (only works for a single drive; see below) • From the Display Drives list when you add a pool spare or display all drives (works for multiple drives).

  • Page 201: Testing A Drive

    Managing Drives & Enclosures Select the drive you want and press Enter. The system confirms that you want to make the change. Select Yes and press Enter to make the change. To make the drive display again, you must use Rescan. See G.10, ”Rescanning All Channels”, on page 206.

  • Page 202: Setting The Emp Lun

    RS-1600-X24 User Guide F.2.1 Setting the EMP LUN If you have only one EMP, the configuration settings are automatically enabled when the X24 Subsystem is installed. If you have more than one EMP, you must set up the EMP LUNs as described in this section.
  • Page 203 Managing Drives & Enclosures Select EMP LUNs and press Enter. The EMP LUNs screen displays. Select the EMP you want and press Enter. The X24 Subsystem assigns EMP IDs sequentially when it starts. The EMP LUN screen displays.
  • Page 204 RS-1600-X24 User Guide Select the option or number you want to use. Do this Not assign the a LUN Select NONE and press Enter. Keep the same LUN for the Select the [LUN] you want to use and press Enter.

  • Page 205: Changing The Additional Emp Setting

    Managing Drives & Enclosures F.2.2 Changing the Additional EMP Setting You can change one additional EMP setting: • Polling interval: This is the interval, in seconds, that the X24 Subsystem polls the EMPs for status changes. If the polling rate is set to zero, the X24 Subsystem does not communicate with the EMP. Only use this setting if you suspect you are having communication problems with the EMP.
  • Page 206 RS-1600-X24 User Guide...

  • Page 207: G Configuring The X24 Subsystem

    Configuring X24 Appendix G Configuring the X24 Subsystem Using the Disk Array Administrator, you can configure settings and perform a variety of functions on the X24 Subsystem. You can: • Shut down and restart the Storage Manager module (see page 190) •...

  • Page 208: Shutting Down And Restarting The Storage Manager Module

    RS-1600-X24 User Guide G.1 Shutting Down and Restarting the Storage Manager Module • Shut down and restart the current SM module: Gracefully shuts down and restarts the SM module you are currently accessing using the Disk Array Administrator software (as shown at the bottom of each screen).

  • Page 209: Shutting Down The Other Sm Module

    Configuring X24 Select Shutdown/Restart and press Enter The system confirms that you want to shut down .Select Yes and press Enter. The system confirms that it has shut down. To restart the SM, press Enter to restart. The system performs its self-test. When you see the Disk Array Administrator initial screen, the SM is ready.

  • Page 210: Shutting Down Both Sm Modules

    RS-1600-X24 User Guide To shut down the other SM module: From the System Menu, select Shutdown Menu and press Enter The Shutdown Menu displays. Select Shutdown Other and press Enter The system confirms that you want to shut down. Select Yes and press Enter.
  • Page 211 Configuring X24 Select Set Date and press Enter. The Set Date screen displays Enter the date you want and press Enter.
  • Page 212 RS-1600-X24 User Guide Enter the date in the following format: MM/DD/YYYY. The system confirms that you want to make the change. Select Yes and press Enter to make the change. The system confirms that the change is made. Press Esc to return to the Configuration Menu.

  • Page 213: Configuring The Host Channels

    Configuring X24 G.3 Configuring the Host Channels You can configure several settings for each host channel independently. Table 7–1 lists the host channel settings and what they do. Table 7–1 Host channel settings Host channel Description setting Topology You should be sure that the topology setting is correct for your configuration. You can set the topology to: •...

  • Page 214: Understanding Luns And Viewing Lun Information

    RS-1600-X24 User Guide To configure the host channels: From the System Menu, select Configuration Menu and press Enter. The Configuration Menu displays. Select Host Configuration and press Enter. The Select Host Channel screen displays. Select the host channel you want to configure and press Enter.

  • Page 215: Viewing Lun Information

    Configuring X24 • EMP LUNs: Allow access to EMPs. You can set an EMP LUN to a value of 0-63 or NONE. NONE means that the EMP cannot be accessed via a LUN. For information about changing the EMP LUN, F.2.1, ”Setting the EMP LUN”, on page 184.

  • Page 216: Configuring The Fc Disk Channels

    1 GB/second or 2 GB/second. The Link Speed setting is set on the Ops Panel switches, as shown in Figure 7–1 and defined in Table 7–2. Caution All mandatory settings must be observed in order for the RS-1600-X24 system to function correctly.
  • Page 217 Configuring X24 Figure 7–1 Ops Panel LEDs and Switches Table 7–2 Ops Panel Switch Functions Switch Function Recommended Definition Number Setting Loop Select, LRC operates on two loops of 8 drives Dual (2x8) Mandatory Not Used Note: on Expansion enclosures this must be set On. Not Used Not Used 5 &...

  • Page 218: Changing The Alarm Mute Setting

    RS-1600-X24 User Guide – Any number between 0 and 125: Select a specific number if you want the initiator ID to stay the same after you power down and power up. The Disk Array Administrator software cannot tell you which IDs are available. To be sure that you have successfully assigned the ID you want, check the ID after you restart the X24 Subsystem.
  • Page 219 Configuring X24 You can also use the Mute button on the X24 Ops Panel to turn off the alarm when it sounds. The alarm sounds for temperature or voltage conditions (events). Warning events are generated when the temperature or voltage enters the warning range. Shutdown events are generated when the temperature or voltage enters the shutdown range.
  • Page 220 RS-1600-X24 User Guide Table 7–3 .Alarm thresholds Alarm threshold What to do when the alarm sounds 12V voltage • Same as above for the VCC voltage. • Warning: 12 V -20% to -10% and +10% to +20% • Shutdown: 12 V <-20% and >+20% 2.5 V voltage...

  • Page 221: Locking The Cache Setting

    Configuring X24 G.7 Locking the Cache Setting You can prevent host systems from using SCSI mode-select commands to change the X24 Subsystem’s write-back cache setting. Some operating systems disable write cache. If cache lock is enabled, the host cannot modify the cache setting. The default setting is disabled. This option is useful in some environments where the host system disables the SM module’s write-back cache, resulting in degraded performance.

  • Page 222: Enabling And Disabling The Battery

    RS-1600-X24 User Guide Select the option you want and press Enter. G.8 Enabling and Disabling the Battery If you are not using a battery in your X24 Subsystem, the X24 Subsystem will sound an alarm. To eliminate the alarm, you can disable the battery. The default setting is battery enabled.

  • Page 223: Changing The Utility Priority

    Configuring X24 Select the option you want and press Enter. Restart to have your changes take effect. G.1, ”Shutting Down and Restarting the Storage Manager Module”, on page 190. G.9 Changing the Utility Priority You can change the priority at which all utilities (Verify, Reconstruct, Expand, Initialize, etc.) run when there are active I/O operations competing for the X24 Subsystem’s CPU.

  • Page 224: G.10Rescanning All Channels

    RS-1600-X24 User Guide Select the option you want and press Enter. G.10 Rescanning All Channels You can tell the X24 Subsystem to scan all disk channels for new or removed disk drives. You can use this option when you install or remove drives. The rescan temporarily pauses all I/O processes and then resumes normal operation.

  • Page 225: G.11Pausing I/O

    Configuring X24 Select Rescan and press Enter. G.11 Pausing I/O Most drive enclosures allow you to remove and replace drives while FC disk channel activity continues. However, you may still want to pause I/O if you are replacing more than one disk drive. The Hot Swap Pause option suspends activity on all device channels used in the X24 Subsystem, thereby ensuring data integrity on the connected drives and arrays.

  • Page 226: G.12Restoring Default Settings

    RS-1600-X24 User Guide When you have replaced the drive, resume back end activity by pressing Esc. Caution Do not stay in the Hot Swap Pause mode for too long; otherwise, an operating system time-out may occur (the time varies according to the operating system). For example, in Windows NT, the default limitation during I/O activity is 10 seconds.

  • Page 227: G.13Updating Firmware

    Configuring X24 G.13 Updating Firmware You can update five types of firmware for each X24 Subsystem: • Storage Manager • Storage Manager loader • Memory controller • LAN Subsystem • LAN Subsystem loader Information regarding the latest release of firmware and firmware updates is available from technical support.

  • Page 228: Updating Lan Firmware

    RS-1600-X24 User Guide Press the number on your keyboard that corresponds to the protocol you want to use to transfer the firmware upgrade file from your computer to the SM module. We recommend using the KERMIT protocol. The system shows that it is ready to use KERMIT.
  • Page 229 Configuring X24 To upgrade the LAN Subsystem’s firmware: Check the version of LAN firmware you have now by pressing CTRL-E until the configuration information screen with that information displays. Call technical support for information about downloading the firmware updates. From the computer connected to the SM module, access the DOS window. At the DOS prompt change to the directory where you downloaded the.bfl file.
  • Page 230 RS-1600-X24 User Guide...

  • Page 231: H Lan Configuration

    LAN Configuration Appendix H LAN Configuration .Before you can access the Disk Array Administrator software using the Ethernet port, you must set up each SM module for TCP/IP. The following sections describe the TCP/IP setup. A SM module that is part of a TCP/IP network requires three basic IP configuration elements: IP address, subnet mask, and default gateway IP address.

  • Page 232: Configuring The Lan Settings

    RS-1600-X24 User Guide H.2 Configuring the LAN Settings You can configure several LAN settings for each SM using the Disk Array Administrator software: • IP settings (see page 214) • FTP settings (see page 215) • Telnet settings (see page 215) •...

  • Page 233: Configuring The Ftp Settings

    LAN Configuration Select the option you want and press Enter. The screen displays related to the option you selected. Enter the IP address, subnet mask, or gateway you want and press Enter. The system confirms that you want to make the change. Select Yes and press Enter.

  • Page 234: Configuring The Snmp Settings

    RS-1600-X24 User Guide Changes to either of these settings on either SM module are automatically updated on the other SM module. To set the Telnet settings: From the System Menu, select Configuration Menu and press Enter. The Configuration Menu displays.

  • Page 235: Configuring The Contact Settings

    LAN Configuration Select SNMP Settings and press Enter. The SNMP Settings screen displays. Select the option you want and press Enter. The screen displays related to the option you selected. Enter or select the option you want and press Enter. The system confirms that you want to make the change.

  • Page 236: Configuring The Http Settings

    RS-1600-X24 User Guide H.2.6 Configuring the HTTP Settings You can set up the passwords for SAM, the browser-based interface. In SAM, you can set up two types of SAM users: • Monitor: Have access to only the Monitor menu that lets you view the status and statistics pages.

  • Page 237: Resetting The Lan Subsystem

    LAN Configuration • SNMP: Controls the availability of SNMP, which permits remote monitoring of the X24 using your LAN. The default is enabled. • Internet Debug: Used for diagnosing problems during the technical support process. We recommend that this remain disabled unless support personnel tell you to enable it. The default is disabled.
  • Page 238 RS-1600-X24 User Guide...

  • Page 239: Glossary

    1 kilobyte (K) is equal to 1,024 bytes or characters; 64K indicates 65,536 bytes or characters. Cable Throughout this RS-1600-X24 user guide this term is used in accordance with the preferred US context of: “an insulated flexible electric wire used for the transmission of data signals between computer equipment.”...
  • Page 240 Disk (drive, carrier, module) A FC-X24 FC-AL disk drive mounted in a carrier. You can have up to sixteen disk drive carrier modules in each RS-1600-X24 enclosure. Enclosure The chassis assembly which houses the plug-in modules that make up the RS-1600-X24 storage Subsystem.
  • Page 241 Subsystem. Hot swap Hot swapping is the term used for manually swapping a failed disk unit with a replacement while the RS-1600-X24 Subsystem is in normal use. Hz (Hertz) a frequency measurement unit used internationally to indicate cycles per second.
  • Page 242 Module (drive carrier, power supply/cooling, storage manager) A module is a power supply, disk drive or electronics unit held in a carrier that plugs into a bay inside the enclosure. A RS-1600-X24 enclosure can contain sixteen drive carrier modules, two power supply/cooling modules and two Storage Manager modules.
  • Page 243 F-port on a switch. X24 supports point-to-point connections to fabric ports only (sometime referred to as F-ports). Power Cord Throughout this RS-1600-X24 user guide this term is used in accordance with the preferred US context of: “an insulated flexible electric wire fitted with connectors at each end and used for the transmission of electrical power to computer equipment.
  • Page 244 RS-1600-X24 User Guide SCSI port A SCSI port is an opening at the back of a router that provides connection between the SCSI adapter and SCSI bus. Serial Transmission The transfer of data characters one bit at a time, sequentially, using a single electrical path.
  • Page 245 Glossary Any disk drives with write-back cache enabled should be connected to an Uninterruptible power supply (UPS) in case of a power failure. If the drives are not on a UPS and power is lost during disk writes, the array will lose any data in the disk’s write-back cache.
  • Page 246 RS-1600-X24 User Guide...
  • Page 247 Index Index status of verifying 22, 125 stopping the initialization Abort an Array Utility page 22 process 120 Abort Initialization 120, 121 stopping the verify process 22, 125 Abort Verify 126 trusting 23, 130 access to partitions, controlling 27, 144 verifying 22, 123 accessing the Disk Array Administrator viewing aggregate statistics for...
  • Page 248 RS-1600-X24 User Guide CAPI LUN changing 44 displaying 159 CAPI LUNs Configuration Information screen 163 changing 44, 195 configuration software, accessing 95, defined 43, 196 capturing configuring complete event, hardware, and disk channels 198 configuration information 164 host channels 195...
  • Page 249 Index disabling events 154 SMART changes 55, 181 hardware information 159 the battery 46, 204 partition status 25, 134 write-back cache changes 55, 177 pool spares 171 Disk 18 Down Drive page 56 Disk Array Administrator drive carrier 18, 60 accessing 95, 103 drive carrier handles 10 changing the screen display 102...
  • Page 250 RS-1600-X24 User Guide enabling Expand Partition 140 SMART changes 55, 181 Expand Status screen 129 the battery 46, 204 expanding write-back cache changes 55, 177 array capacity 126 Enclosure 2, 4, 10, 11, 64, 66 partition capacity 134, 139 Enclosure Management page 58...
  • Page 251 Index Hardware Information screen 162 histogram, viewing for reads and writes 21, 36, 165 configuring HTTP settings 218 host channels configuring security options 42, 218 configuring 195 configuring settings for 40, 214 problems with 67 configuring the contact settings 41, selecting the FC loop ID 195 selecting the link speed 195 configuring the FTP settings 215...
  • Page 252 RS-1600-X24 User Guide setting up debug 83 configuring security options for 42, viewing debug 83 viewing event 154 configuring settings for 40, 214 LUN information 197 configuring the contact settings 41, LUN Information page 44 LUN Information screen 197, 198...
  • Page 253 Index partitions priority, changing for X24 utilities 46, adding 121 changing LUNs for 26, 141 problems with changing names of 25, 140 host channels 67 controlling access to 27, 29, 144, terminal screen 76 the X24 69 creating array with multiple 111 PSU voltage operating range 4 creating array with one 106 deleting 31, 151...
  • Page 254 RS-1600-X24 User Guide accessing the Disk Array SM module LED indicators 6 Administrator software 96 SMART settings for 96 disabling changes to 55, 181 enabling changes to 55, 181 SMART screen 181 SNMP configuring 40, 216 enabling and disabling 42, 219...
  • Page 255 Index status troubleshooting 76 monitoring for system 33, 153 Trust Array page 24 of expanding 129 trusting arrays 23, 130 viewing for arrays 20, 117 viewing for disk drive cache 55, 179 viewing for drives 20, 54, 119, 175 viewing for partitions 25, 134 updating Storage Array Status page 20, 25 firmware 209...
  • Page 256 RS-1600-X24 User Guide read/write histogram 21, 36, 165 updating firmware 209 status for drives 55, 179 updating software 51 the debug log 83 X24 enclosure ID 5, 87 Visible and Audible Alarms 10 Xyratex X24 RAID controller 2, 6 voltage...

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